46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
/*\
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title: $:/core/modules/filters/unknown.js
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type: application/javascript
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module-type: filteroperator
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Filter operator for handling unknown filter operators.
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Not intended to be used directly by end users, hence the square brackets around the name.
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var fieldFilterOperatorFn = require("$:/core/modules/filters/field.js").field;
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/*
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Export our filter function
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*/
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exports["[unknown]"] = function(source,operator,options) {
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// Check for a user defined filter operator
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if(operator.operator.charAt(0) === ".") {
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var variableInfo = options.widget && options.widget.getVariableInfo && options.widget.getVariableInfo(operator.operator);
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if(variableInfo && variableInfo.srcVariable && variableInfo.srcVariable.isFunctionDefinition) {
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var list = options.widget.evaluateVariable(operator.operator,{params: operator.operands, source: source});
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if(operator.prefix === "!") {
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var results = [];
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source(function(tiddler,title) {
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if(list.indexOf(title) === -1) {
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results.push(title);
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}
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});
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return results;
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} else {
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return list;
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}
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}
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}
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// Otherwise, use the "field" operator
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return fieldFilterOperatorFn(source,operator,options);
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};
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})();
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